Dc powered system combining dc/ac inverter for ac power and constant current supplies for led drive for illumination and signaling, and for battery charging

Abstract

A combined system incorporating one or more DC/AC inverter systems or sub-systems, and one or more constant current sources and/or constant current sinks is disclosed. Various embodiments of this invention simultaneously deliver AC electrical power, as well as source or sink constant current to or from one or more electrical loads. Powered by one or more DC power sources, this invention combines into a single standalone multi-function unit the capability to deliver AC electrical power and also constant source or sink currents for LED lighting for general illumination or signaling, and optionally, also for charging or discharging one or more batteries. Examples of constant current loads driven by this invention include, but are not limited to, visible, infrared or ultra-violet LEDs, laser diodes and batteries of arbitrary composition, construction and voltage/current ratings in controlled charge or discharge mode.

What is claimed is: 
     
         1 . A standalone, multi-function DC powered system consisting of a DC/AC inverter or multiple DC/AC inverters and an arbitrary number of constant current source or sink LED drivers with the simultaneous capability to generate AC power and drive current for general visible, infrared or ultra-violet LED illumination (LED lighting) and signaling. 
     
     
         2 . A standalone, multi-function DC powered system combining a DC/AC inverter or multiple DC/AC inverters, at least one constant current source or sink LED driver, and an arbitrary number of constant current (CC), and/or dual mode constant voltage and constant current (CVCC) battery chargers with the simultaneous capability to generate AC power, drive current for general visible, infrared or ultra-violet LED illumination (LED lighting) and signaling, and also provide controlled charge to or discharge of any number of batteries of arbitrary composition, construction and voltage/current ratings. 
     
     
         3 . The output waveforms of the DC/AC inverters of  claim 1  and  claim 2  are of any arbitrary periodic wave shape, including but not limited to sine, triangular, ramp, square, and square-wave-with-dead-time (“modified sine wave”) shapes. 
     
     
         4 . The output waveforms of the DC/AC inverters of  claim 1  and  claim 2  are of an arbitrary fixed or variable frequency. 
     
     
         5 . The output voltage and current of the DC/AC inverters of  claim 1  and  claim 2  are of arbitrary, fixed or variable magnitude. 
     
     
         6 . The totality of the DC powered systems of  claim 1  and  claim 2  wholly including an arbitrary number of DC power sources for the system internally, or using wholly external power sources, or including and using an arbitrary combination of internal and external power sources.